Examples of the confinement of electrogenerated paramagnetic species in magnetic field gradients surrounding magnetized disk- and cylinder-shaped Fe microelectrodes (250 mum radius) are reported. Magnetization of the Fe microelectrodes in a uniform magnetic field (0.25 T) creates a field gradient in the local vicinity of the electrodes. The force acting on the redox molecule in this region is given by F-del = 2(m*(2)/kT)(B(.)del )B, where m* is the magnetic dipole of the molecule and B is the magnetic flux density. As anticipated, the distribution of paramagnetic molecules in the solution surrounding the electrode (recorded using video microscopy) is shown to be proportional to the quantity (B(.)del )B; i.e., paramagnetic molecules are trapped in regions of space where the product of the field and field gradient is largest. Voltammetric measurements and video images illustrate the effectiveness of the gradient force in trapping paramagnetic molecules at the Fe microelectrodes and are compared with results obtained using paramagnetic Pt microelectrodes.